The distribution of rheumatoid factor and rheumatoid arthritis in the families of Blackfeet and Pima Indians.
D000328:Adult; D000367:Age Factors; D000368:Aged; D000372:Agglutination Tests; D001172:Arthritis, Rheumatoid / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics*; D004781:Environmental Exposure; D005260:Female; D006801:Humans; D007198:Indians, North American; D008297:Male; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000097:blood*
D012217:Rheumatoid Factor